Bearing for sliding door without base

Abstract

The utility model provides a bearing for a sliding door without a base, which comprises an outer ring, an inner ring, a retainer and a plurality of rollers, a roller path for accommodating the plurality of rollers is formed between the outer ring and the inner ring, the retainer is used for spacing and guiding the plurality of rollers, and the roller path is arranged between the outer ring and the inner ring. The two mounting plates are used for being connected with the sliding door, one end of the positioning shaft is provided with a fixing part, the two mounting plates are arranged on the two sides of the outer ring respectively, the positioning shaft is inserted into an inner hole of the inner ring, a plurality of inserting grooves distributed in the length direction of the mounting plates at intervals are formed in the mounting plates, and the fixing part is arranged in the inserting grooves. A plurality of tooth pieces are arranged on the outer ring, the tooth pieces are evenly distributed in the circumferential direction of the outer ring at intervals, and the outer ring and the mounting plate can be meshed through the tooth pieces and the inserting grooves. Aiming at the defects in the prior art, the utility model provides the bearing for the base-free sliding door, which is smaller in occupied space and convenient to install.

Description

Technical Field

[0001] This utility model relates to the field of bearings, and in particular to a baseless sliding door bearing. Background Technology

[0002] A baseless sliding door is a type of sliding door that eliminates the ground track and uses top or side bearing assemblies to slide the door. It is widely used in dressing rooms, balconies and other similar settings. Compared to traditional sliding doors that rely on a ground base track, it has the advantages of simpler installation and maintenance, less dust accumulation and jamming, and wider applicability. The core of a baseless sliding door lies in the support and guidance provided by the bearings, which places higher demands on the bearings. Existing bearing technologies require additional components, making installation complex and space-consuming. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a baseless sliding door bearing that occupies less space and is easier to install.

[0004] To achieve the above objectives, this utility model provides a baseless sliding door bearing, comprising an outer ring, an inner ring, a cage, and a plurality of rollers. A raceway is formed between the outer ring and the inner ring to accommodate the plurality of rollers. The cage is used to space and guide the plurality of rollers. It also includes two mounting plates for connecting the sliding door and a positioning shaft with a fixing part at one end. The two mounting plates are respectively disposed on both sides of the outer ring. The positioning shaft is inserted into the inner hole of the inner ring. The mounting plates are provided with a plurality of slots arranged at intervals along their length direction. The outer ring is provided with a plurality of toothed plates, which are evenly distributed at intervals along the circumference of the outer ring, and the outer ring and the mounting plates can mesh through the toothed plates and the slots.

[0005] The advantages of the above technical solution are as follows: By additionally setting up two mounting plates for connecting the sliding door and a positioning shaft with a fixing part at one end, the positioning shaft is inserted into the inner ring. Then, the mounting plate and the outer ring are engaged through toothed plates and slots, allowing for quick and convenient installation after the mounting plate and the bearing are aligned. Furthermore, the engagement between the mounting plate and the outer ring through the toothed plates and slots facilitates adjustment and adapts to a wide range of scenarios. By directly setting the toothed plates on the outer ring of the bearing to form a rotating support with the mounting plate, compared to traditional bearings, no additional accessories are required, reducing space occupation. This is especially suitable for scenarios with high space requirements, achieving a dual improvement in both installation convenience and space optimization.

[0006] The present invention can be further configured such that: a threaded portion and a nut are provided at the other end of the positioning shaft, and the positioning shaft is gradually increased in the direction of one end, and the threaded portion and the nut are screwed together.

[0007] By further designing the positioning shaft so that it gradually increases in size towards one end, and a threaded part and nut are provided at the other end, the bearing inner ring is fitted into a certain position by the gradually increasing outer wall of the positioning shaft, which can limit its movement. Then, the nut screwed into the threaded part is tightened to form a positioning, which facilitates installation and improves installation efficiency.

[0008] The present invention can be further configured such that: the roller is a tapered roller, the inner ring includes an abutting surface corresponding to its large end, and the abutting surface and the nut are in abutting fit.

[0009] By further refining the design, tapered rollers are installed to allow the bearing to withstand larger axial and radial combined loads, ensuring stable operation of the sliding door. A contact surface is provided at the large end of the inner ring to facilitate contact with the nut, increasing the release area between the nut and the inner ring and ensuring the effective clamping and positioning of the nut.

[0010] This utility model can be further configured such that the toothed plate is arranged in a trapezoidal shape that gradually decreases towards the end.

[0011] With further design, the toothed plate is trapezoidal in shape with a gradually tapering end. The end of the toothed plate can play a good guiding role during installation and operation, reducing the difficulty of alignment, facilitating installation and making the use more stable. In addition, during operation, the bottom of the toothed plate can form a tight wedge-like engagement with the slot, effectively preventing loosening due to vibration and other factors.

[0012] The present invention can be further configured such that: the fixing part of the positioning shaft is arranged in a ring shape, and a plurality of positioning holes are provided at the fixing part, and the plurality of positioning holes are distributed at intervals along the circumference of the fixing part.

[0013] With further design, the positioning shaft fixing part adopts a ring-shaped design and is equipped with circumferentially spaced positioning holes, which can fit closely to the mounting surface such as door frame or wall, evenly distribute the force, and avoid excessive load on a single point; multiple positioning holes can be adapted to bolts, screws and other connecting parts of different specifications, so as to flexibly select the fixing position according to the actual installation requirements. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the usage state structure of an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the explosion state of an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the mounting block in an embodiment of the present invention;

[0017] Wherein: outer ring 1; toothed plate 11; inner ring 2; abutment surface 21; cage 3; roller 4; mounting plate 5; slot 51; positioning shaft 6; fixing part 61; threaded part 62; nut 63; positioning hole 64. Detailed Implementation

[0018] An embodiment of this utility model of a baseless sliding door bearing is shown below. Figure 1-3 As shown: It includes an outer ring 1, an inner ring 2, a retainer 3, and a plurality of rollers 4. A raceway is formed between the outer ring 1 and the inner ring 2 to accommodate the plurality of rollers 4. The retainer 3 is used to space and guide the plurality of rollers 4. It also includes two mounting plates 5 for connecting the sliding door and a positioning shaft 6 with a fixing part 61 at one end. The two mounting plates 5 are respectively set on both sides of the outer ring 1. The positioning shaft 6 is inserted into the inner hole of the inner ring 2. The mounting plates 5 are provided with a plurality of slots 51 arranged at intervals along their length direction. The outer ring 1 is provided with a plurality of toothed plates 11. The toothed plates 11 are evenly distributed at intervals along the circumference of the outer ring 1, and the outer ring 1 and the mounting plates 5 can be engaged by the toothed plates 11 and the slots 51.

[0019] The other end of the positioning shaft 6 is provided with a threaded part 62 and a nut 63, and the positioning shaft 6 is gradually increased in the direction of one end, and the threaded part 62 and the nut 63 are screwed together.

[0020] The roller 4 is a tapered roller, and the inner ring 2 includes an abutting surface 21 corresponding to its large end, which abuts against the nut 63.

[0021] The toothed plate 11 is arranged in a trapezoidal shape that gradually decreases towards the end.

[0022] The fixing part 61 of the positioning shaft 6 is arranged in a ring shape, and a plurality of positioning holes 64 are provided at the fixing part 61, which are distributed at intervals along the circumference of the fixing part 61.

[0023] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A bearing for a bottomless sliding door, comprising an outer ring, an inner ring, a retainer and a plurality of rollers, a rolling track for accommodating the plurality of rollers is formed between the outer ring and the inner ring, and the retainer is used for spacing and guiding the plurality of rollers, characterized in that: It includes two mounting plates for connecting a sliding door and a positioning shaft with a fixing part at one end. The two mounting plates are respectively set on both sides of the outer ring. The positioning shaft is inserted into the inner hole of the inner ring. The mounting plates are provided with a number of slots arranged at intervals along their length. The outer ring is provided with a number of toothed pieces. The toothed pieces are evenly distributed at intervals along the circumference of the outer ring, and the outer ring and the mounting plates can be engaged through the toothed pieces and the slots.

2. Bearing for a bottomless sliding door according to claim 1, characterized in that: The other end of the positioning shaft is provided with a threaded part and a nut, and the positioning shaft is gradually increased in the direction of one end, and the threaded part and the nut are screwed together.

3. Bearing for a bottomless sliding door according to claim 2, characterized in that: The roller is a tapered roller, and the inner ring includes an abutting surface corresponding to its large end, which abuts against the nut.

4. Bearing for a bottomless sliding door according to claim 1 or 2 or 3, characterized in that: The toothed plates are arranged in a trapezoidal shape that gradually decreases towards the ends.

5. Bearing for a bottomless sliding door according to claim 2 or 3, characterized in that: The fixing part of the positioning shaft is arranged in a ring shape, and a number of positioning holes are provided at the fixing part, which are distributed at intervals along the circumference of the fixing part.

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